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Infrared behavior of graviton-graviton scattering
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The quantum effective theory of general relativity, independent of the eventual full theory at high energy, expresses graviton-graviton scattering at one loop order O(E^4) with only one parameter, Newton's constant. Dunbar and Norridge have calculated the one loop amplitude using string based techniques. We complete the calculation by showing that the 1/(d-4) divergence which remains in their result comes from the infrared sector and that the cross section is finite and model independent when the usual bremsstrahlung diagrams are included.
Forward citations
Cited by 2 Pith papers
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Energy correlators in four-dimensional gravity
Gravitational energy correlators in four dimensions are computed at one loop, shown to be infrared-finite, and resummed in the back-to-back limit by soft-graviton exponentiation.
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Four-graviton one-loop closed superstring amplitudes in the celestial basis factor out the α' dependence, and the field theory limit commutes with the Mellin transform for all values of the cross-ratio.
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